It is a USB device (0a5c:4500), part of a BCM2046 sitting in a MacBookAir. The driver is btusb.

> Which part are you testing (Magic TP or mouse)?

Magic trackpad.

> I've been trying to test these patches on a Magic Trackpad using two> computers, with two different ath3k parts.> On one of them, the BT communication freezes immediately after the> first report with 3 fingers.> On the other, it reports all 10 fingers, just fine.

Interesting. Clearly not a HID problem, then.

> The only difference I can tell is the version of the Atheros Bluetooth chip.> > What does your freeze look like?

The input events stop coming when I have more than four fingers on thepad, but they start again if I remove the excess fingers. As if thetransport layer chokes on messages longer than some value...